Currently $2300 plus taxes on Amazon which is already a discount from the over $3,000 price tag on the Aquasana web site.  Comes in 4 boxes.  This particular system is for well water but we also have one for city water similarly priced.
 
Aquasana EQ-WELL-UV-PRO-AST Whole House Well Water Filter System - Water Softener Alternative w/UV Purifier, Salt-Free Descaler, Carbon & KDF Media - Filters Sediment & Chlorine
 
Clean, Great Tasting Water From Every Tap In Your Home - Removes 97% of chlorine, 99.9% of viruses and bacterica and reduces harmful contaminants like lead, mercury, herbicides, pesticides, VOCs, and more
High-Performance Well Filter System - UV purifier, salt-free conditioner, carbon & KDF filtration engineered to maximize water purifty and reduce scale while leaving healthy minerals in your water. This system will NOT reduce Total Dissolved Solids (TDS)
Cost Efficient & Long Lasting - Clean water for less than $0.01 a gallon - Save twice as much compared to other brands on purified water for 500,000 gallons or 5 years
Easy Maintenance - No draining or back flushing needed - Easily replace pre and post filters every 2-3 months for best filtration and flow rate
Top-Grade Install Kit & Components - System includes filtration tank, conditioner tank, UV filter, 20" pre-filter, post-filter, brass fittings for 1'' or 3/4'' pipes, bend supports, and shut-off valves – Item may ship in more than one box and may arrive separately
 
https://www.amazon.com/Aquasana-EQ-WELL-UV-PRO-AST-Whole-Filter-System/dp/B09DV1B8ZK